广东省台山市有线数字电视乡镇环网技术方案

Township Ring Network Technology Solutions of Digital Cable TV in Taishan City,Guangdong Province

论述台山市城区有线电视网数字化平移后,规划建立以总前端为中心的多个乡镇分前端的光纤环网传输模式,并针对该传输模式进行了设计。在光功率指标计算的基础上,进行模拟载噪比CNR、组合二次差拍CSO、组合三次差拍CTB指标的计算,且进行了光纤干线数字化后传输指标MER的估算。

This paper first discusses the digital translation of Taishan city cable network,then plans to construct an optical fiber ring network transmission mode which is centered on the main front end and shared in the form of secondary front ends by multiple townships,and proposes a design based on the transmission mode. On the basis of the optical power index calculation,this paper conducts the calculation of simulation CNR,CSO,and CTB index,and estimates the fiber optic trunk digital transmission index.